You guys think that Bwonsamdi saved Prophet Zul from the Maw or let that guy get dunked right into it?pic.twitter.com/tl6mSQakbq
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Heck, he even states as a lesson at the end of the questline to “prepare for the future, even for ones one has not forseen”.
Prophet Zul didn't take his own lessons to heart is the more likely case. He likes looking down at others and believes himself unstoppable but he was, as was G'huun.